Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 210244
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
844 PM CST TUE JAN 20 2015

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN.

WAVES ARE PROVIDED AS A RANGE OF SIGNIFICANT WAVE HEIGHTS...WHICH
IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES...ALONG
WITH THE AVERAGE HEIGHT OF THE HIGHEST 10 PERCENT OF THE WAVES
WHICH WILL OCCASIONALLY BE ENCOUNTERED.

.SYNOPSIS...A WEAK 29.9 INCH LOW IS OVER SOUTHEAST INDIANA...AND
IS EXPECTED TO STEADILY WEAKEN THROUGH WEDNESDAY MORNING. THE LOW
WILL SHIFT SOUTHEAST AS A SECOND WEAK LOW OF 30.0 INCHES PASSES
OVER NORTHERN ILLINOIS WEDNESDAY MORNING. HIGH PRESSURE AVERAGING
30.5 INCHES SPREADS OVER THE REGION THURSDAY MORNING AND SINKS
SOUTH OF THE LAKE FRIDAY AFTERNOON. A 29.4 INCH LOW MOVES OVER
NORTHERN ONTARIO FRIDAY MORNING AND DEEPENS TO 29.3 INCHES AS IT
ARRIVES OVER EASTERN QUEBEC FRIDAY EVENING. THE LOWS COLD FRONT
SWINGS OVER THE LAKE FRIDAY NIGHT THEN A 30.0 INCH HIGH MOVES IN
BEHIND THE COLD FRONT. FINALLY A STRONG LOW PRESSURE SYSTEM SHIFTS
FROM SASKATCHEWAN TO ILLINOIS SUNDAY.

LMZ261-362-364-366-563-565-567-868-211030-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE
MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH
FOX ISLAND 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
844 PM CST TUE JAN 20 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.REST OF TONIGHT...NORTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.WEDNESDAY...NORTHEAST WINDS 5 TO 10 KT BECOMING NORTH 10 TO 15 KT.
CHANCE OF SNOW. WAVES 1 TO 3 FT.
.WEDNESDAY NIGHT...NORTHWEST WINDS 10 TO 15 KT. SLIGHT CHANCE OF
SNOW. WAVES 1 TO 3 FT.
.THURSDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST 10 TO 20 KT
IN THE AFTERNOON. WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT.
.THURSDAY NIGHT...SOUTHWEST WINDS TO 30 KT INCREASING TO GALES TO
35 KT AFTER MIDNIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT
BUILDING TO 7 TO 10 FT OCCASIONALLY TO 13 FT OVERNIGHT.
.FRIDAY...SOUTHWEST GALES TO 35 KT DIMINISHING TO 30 KT LATE IN
THE AFTERNOON. CHANCE OF SNOW. WAVES 7 TO 10 FT OCCASIONALLY TO
13 FT.
.FRIDAY NIGHT...SOUTHWEST WINDS TO 30 KT BECOMING WEST 15 TO
20 KT OVERNIGHT. CHANCE OF SNOW. WAVES SUBSIDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.SATURDAY...NORTHWEST WINDS 15 TO 20 KT. CHANCE OF SNOW SHOWERS.
WAVES 2 TO 4 FT.
.SUNDAY...EAST WINDS 10 TO 20 KT. SLIGHT CHANCE OF SNOW. WAVES 2 TO
4 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-211030-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
844 PM CST TUE JAN 20 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.REST OF TONIGHT...NORTHEAST WINDS 10 TO 20 KT. PATCHY FOG.
CHANCE OF DRIZZLE WITH PATCHY LIGHT FREEZING DRIZZLE THROUGH
MIDNIGHT...THEN SNOW WITH POSSIBLE FREEZING DRIZZLE OVERNIGHT.
WAVES 2 TO 4 FT.
.WEDNESDAY...NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH IN THE
AFTERNOON. SNOW IN THE MORNING...THEN CHANCE OF SNOW IN THE
AFTERNOON. WAVES 2 TO 4 FT.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 15 KT BECOMING NORTHWEST
AFTER MIDNIGHT. CHANCE OF SNOW. WAVES 1 TO 3 FT.
.THURSDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING WEST. SLIGHT
CHANCE OF SNOW SHOWERS. WAVES 1 TO 3 FT.
.THURSDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KT. WAVES 2 TO 4 FT
BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT OVERNIGHT.
.FRIDAY...SOUTHWEST WINDS TO 30 KT. WAVES 5 TO 8 FT OCCASIONALLY
TO 10 FT.
.FRIDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST 15 TO 20
KT AFTER MIDNIGHT. SLIGHT CHANCE OF SNOW. WAVES SUBSIDING TO 4 TO
7 FT OCCASIONALLY TO 9 FT.
.SATURDAY...NORTHWEST WINDS 15 TO 20 KT. SLIGHT CHANCE OF SNOW
SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.SUNDAY...EAST WINDS 10 TO 20 KT. CHANCE OF SNOW. WAVES 1 TO 3 FT
BUILDING TO 2 TO 4 FT IN THE AFTERNOON.

$$
LMZ761-211030-
MAFOR 2104/
MICHIGAN NORTH 12110 12100 12810 12710. CHANCE OF SNOW WEDNESDAY.
WAVES 1 TO 3 FT OVERNIGHT. WAVES 1 TO 3 FT WEDNESDAY AND
WEDNESDAY EVENING.

MICHIGAN SOUTH 11120 11127 12117 14810. PATCHY FOG. CHANCE OF
DRIZZLE WITH PATCHY LIGHT FREEZING DRIZZLE. CHANCE OF SNOW
WEDNESDAY AFTERNOON AND WEDNESDAY EVENING. WAVES 2 TO 4 FT
OVERNIGHT AND WEDNESDAY. WAVES 1 TO 3 FT WEDNESDAY EVENING.

$$

BEACHLER




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